4L60E Tcc Solenoid 1993-02, new and ready to install. Fits the 4L60E. Ships fast from the USA.
Early 4L60E owners searching for a TCC solenoid usually have one of three complaints: a 1990s Chevy or GMC truck that will not lock up on the highway, a P0740 that comes back after the code is cleared, or an S10, Blazer or Camaro that cruises a few hundred RPM higher than it used to. This new kit is listed under the TCC solenoid name, but the photo shows a full early-style electrical package: the 1993-2002 internal harness carrying the TCC solenoid, the pressure switch manifold, and the shift and control solenoids. On a transmission this old, the wiring and every solenoid have seen the same heat cycles, so renewing them together is often cheaper than a second pan drop.
The first 4L60E units used a single on/off TCC solenoid. When the PCM grounded it, a valve shifted and the converter clutch applied all at once, which works but can be abrupt. During the 1990s GM added a second, pulse-width-modulated TCC solenoid on many applications so the computer could ramp the clutch on gradually. On these years the on/off solenoid rides on the internal harness, so the two are serviced as one piece. Both depend on clean, steady feed pressure from the AFL valve in the valve body and on a harness that has spent decades soaking in hot fluid.
Start at the round case connector on the driver side. ATRA Technical Bulletin 269 lists the 4L60-E connector pin map and solenoid resistance values, so you can measure each circuit from outside the case before dropping the pan. A TCC circuit that reads open or shorted, or one that changes when you wiggle the harness, confirms an electrical fault. Our 4L60E TCC solenoid and P0740 guide shows how to separate an electrical P0740 from a hydraulic slip problem with a scan tool. If your truck also shifts firm or soft, read the EPC pressure control solenoid guide, since that solenoid lives on the same harness.
This kit is listed for the 1993-2002 GM 4L60E, the generation used in the C/K and Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban, S10, Sonoma, Blazer, Camaro and Corvette. It is the early harness design and will not fit a 2003 or later transmission. GM also made changes inside this span, most importantly the move from the single on/off TCC solenoid to the added PWM solenoid, so a 1993-1994 truck may not match a 1999 truck. Compare the harness, connectors and solenoid count in the photo to your valve body, or send us your year and VIN and we will check fitment. More early-model parts are on the 4L60E parts page, and if you only need the harness, see the 1993-2002 internal harness with TCC solenoid.
| Fits | 4L60E 1993-02 |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It is the 1993-2002 harness and solenoid design. 2003 and later 4L60E units use a different harness and connectors.
No. The photo shows the early internal harness with the TCC solenoid, the pressure switch manifold and the shift and control solenoids. Ask us if you want the contents confirmed before ordering.
Yes. If the converter clutch stays applied as the truck slows, it can pull the engine down at a stop, much like a manual car with the clutch let out.
Early units without the PWM TCC solenoid can differ. Match the photo to your valve body or send us your year and VIN before ordering.
Use Dexron VI ATF. It is GM's current service fluid and is backward compatible with the earlier Dexron specifications these trucks were built with.
